Thrust Reverser Lock Comprising Locking Device

Abstract

The invention relates to a lock which is intended to be disposed in a thrust reverser and which comprises a bolt and a linking member having a control lever connected thereto. The invention is characterized in that the control lever is equipped with a slot comprising a coupling section, a throttling section and an end section. The invention is further characterized in that a locking pin, which can move against a spring, is equipped with a constriction having a smaller cross-section than that of the throttling section of the slot. In this way, when the constriction is positioned in line with the slot after the locking pin has moved, the control lever can move alternately from a locking position, in which the locking pin is trapped by the end section, to an open position, in which the slot is disengaged from the locking pin.

1 . A lock intended to be installed in a thrust reverser used in aeronautics, said lock comprising, in particular, a bolt and a linking member to which a control lever is connected, said bolt being able, under the action of the control lever on the linking member, to move alternately from a locking position to an open position, characterized in that the control lever comprises a slot substantially perpendicular to the axis of the control lever, this slot successively having an engagement section, a narrow section and an enlarged end section, and in that a locking pin that is mobile in longitudinal translation against an elastic device is disposed parallel with the axis of rotation of the control lever, said locking pin being provided with a recess having a cross section smaller than that of the narrow section of the slot in order that, when this recess is positioned in line with the slot after a displacement in translation of the locking pin, the control lever can move alternately from a locking position, in which the locking pin is trapped by the end section of the slot, to an open position, in which the slot is disengaged from the locking pin.  
     
     
         2 . The lock as claimed in  claim 1 , characterized in that the end section of the slot is substantially circular, and in that the recess of the locking pin is situated in the extension of a conical section whose biggest diameter is greater than that of the end section.  
     
     
         3 . The lock as claimed in  claim 1 , characterized in that the locking pin comprises a groove able to receive the engagement section of the slot when the elastic device is in the rest state.  
     
     
         4 . The lock as claimed in  claim 1 , characterized in that the engagement section is substantially circular.  
     
     
         5 . The lock as claimed in  claim 1 , characterized in that the diameter of the engagement section is greater than that of the end section.  
     
     
         6 . The lock as claimed in  claim 1 , characterized in that the locking pin comprises a longitudinal window whose length is at least equal to the maximum distance able to be traveled in translation by said locking pin.  
     
     
         7 . The lock as claimed in  claim 6 , characterized in that the longitudinal window is traversed by a stud integral with a fixed part of said lock.  
     
     
         8 . The lock as claimed in  claim 1 , characterized in that the elastic device bears on a retaining ring positioned around the locking pin.  
     
     
         9 . The lock as claimed in  claim 1 , characterized in that the locking pin has a profiled first end provided to adapt to the aerodynamics of the external lines of the associated thrust reverser.  
     
     
         10 . The lock as claimed in  claim 1 , characterized in that the locking pin has an enlarged second end able to butt against a fixed part of said lock.